Said, Tamer H., and Yasser Elkerm. 2021. “Repeated Ultrasound Guided Local Infiltration of Methotrexate in Persistent Gestational Trophoblastic Disease With Myometrial Invasion: Case Series and Review of Literature”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 10 (5):2045-49. https://doi.org/10.18203/2320-1770.ijrcog20211535.